//你的代码将嵌在这里
#include <iostream>
using namespace std;
class Calculator
{
private:
    int count;
public:
    Calculator(int i):count(i){}
    Calculator operator--()
    {
        --count;
        return *this;
    }
    Calculator operator--(int)
    {
        Calculator temp=*this;
        --count;
        return temp;
    }
    void display()
    {
        cout<<"counter number ="<<count<<endl;
    }
};

int main(){
    Calculator b(200);
    --b;
    b.display();
    b--;
    b.display();
    return 0;
}